Aiming at the problem of net-shell connector's rated load not meeting the requirement of overhead transmission line construction, a special traction tube was developed to help with tension stringing.
针对网套式连接器的额定载荷目前还不能满足架空输电线路工程施工要求这一问题，为方便张力放线试制了一种专用的牵引管。
The former was deduced by the natural small basin, but it is not being considered the underlying surface change and different drainage tube net system.
前者是根据天然小流域导出的，对城区因下垫面的变化及排水管网系统的差异，采用该方法显然不十分合适；
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